Homework Answers
9. b (low, high)
10. c (amp, phase, frequency)
11. b&d(Transistor, transformer)
12. d (100)
13. d(PIN diode)
14. a(possitive feedback)
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and a load .08. The "dBm" refers to a unit that has a reference of termination...
q1 q2 q3 pls, help me asap with this mcq, wrong solution give bad rate, tks...
q1
q2
q3
pls, help me asap with this mcq, wrong solution give bad rate, tks
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1. A car uses digital logic to activate a seatbelt alarm. If the ignition is on for 20 seconds and seatbelt is unbuckled, which of the following is the correct truth table? Ignition Seatbelt Unbuckled X Timer Timer = 30s on Answer Ignition Timer X Seatbelt unbuckled 1 1 1 1 B С D 0 0 1 1 0 0 1 1...
1 2 4. The amplitude modulation signal is given by the following expression and is applied...
1
2
4. The amplitude modulation signal is given by the following expression and is applied to 75 load. Vam(t) = 10 sin (21fct) - 2.5 cos (1500krt) + 2.5 cos (1450krt) V Determine: a) Modulation index b) The frequency of the carrier and the information signal c) The bandwidth d) The total power e) The transmission power efficiency be ar e 5. One of the inputs to a frequency modulator is a 250 kHz carrier signal with amplitude of...
10. Answer the following questions: 10.1 What characteristic of the carrier wave is changed to represent...
10. Answer the following questions: 10.1 What characteristic of the carrier wave is changed to represent the data in ASK? a. amplitude b. frequency c. phase d. period 10.2 What kind of keying or modulation changes both the amplitude and phase of a carrier wave to represent data? a. FM 6. FSK c. PSK d. QAM 10.3 PSK is keying, not analog modulation. a. true b. false 11. Match. Data is the original information and signal is the information as...
Please help especially with the excel part. Thank you 2. A series RLC circuit has 3mH...
Please help especially with the excel part. Thank you
2. A series RLC circuit has 3mH of inductance, 75.612 of resistance, and 84.4nF of capacitance. A 12v ac source is used. a. Determine the resonant frequency, bandwidth, and high & low cutoff frequencies of the circuit, all in kHz. b. Use the Excel spreadsheet posted to create a table and calculate the following over a range of 2kHz to 20kHz, at every 1kHz: • Capacitive Reactance • Inductive Reactance •...
NOTE: IT IS VERY IMPORTANT TO STATE THE UNIT OF EVERY QUANTITY UNLESS IT IS UNITLESS...
NOTE: IT IS VERY IMPORTANT TO STATE THE UNIT OF EVERY QUANTITY UNLESS IT IS UNITLESS Problem 2 (30 pts) A transmission line has the following circuit values per unit length: a 0.5 S2/m resistance, a 10 S/m conductance, a 200 pF/m capacitance, and a 0.15 uH/m inductance. Knowing that the operating frequency is 450 Mrad/s calculate the following eight quantities: Y, Z, Y, C, B, 2, Vp, and Z. Problem 3 (25 pts) Analyzing wave reflection at discontinuities in...
In a coherent detection process, a sinusoidally modulated DSB-SC wave, s(t) = c(t)m(t) where the carrier...
In a coherent detection process, a sinusoidally modulated DSB-SC wave, s(t) = c(t)m(t) where the carrier wave is c(t) =Accos(2πfct) and the message signal is m(t) = Amcos(2πfmt), is applied to a product modulator using a locally generated sinusoid of Ac’ amplitude and is out of phase by φ with respect to the sinusoidal carrier used in the modulation. (a) Draw the block diagram of the coherent detection process and label the block diagram with the information provided above accordingly....
can someone help me do this and maybe also the picture of the scope explain how you get it. thankyou! Frequency-sh...
can someone help me do this and maybe also the picture of the
scope explain how you get it. thankyou!
Frequency-shift keying (FSK) and Phase-shift keying (PSK) Two other modulation schemes are the phase-shift keying (PSK) and the frequency-shift keying (FSK). These are illustrated in Figure 8 b and c respectively. In phase-shift keying the carrier signal changes phase by a radians when the digital signal changes values. In frequency-shift keying a 0 is transmitted at a different carrier frequency...
An angle-modulating described as sign ?(?)=40cos (233π106? + 24???3000??) a) Find the amplitude and frequency of...
An angle-modulating described as sign ?(?)=40cos (233π106? + 24???3000??) a) Find the amplitude and frequency of the carrier sign. b) Find the average transmitted power. c) Determine the maximum frequency shift. d) Determine the maximum phase shift. e) Find the bandwidth of the message sign. f) Find the modulation index. g) The tape of the FM sign based on the Carson rule Find the width. h) Possible ??, ?? constants and ? (?) message signal Find one of the values.
3. Consider the AC circuit shown in the figure below, consisting of an alternating voltage source—of...
3. Consider the AC circuit shown in the figure below, consisting
of an alternating voltage source—of voltage V (t) = V0 cos (ωt)—a
capacitor (of capacitance C), an inductor (of inductance L), and
two resistors (of resistances R1 and R2). Also, note the
highlighted points a and b in the circuit. (a) While explaining
your reasoning, determine the necessary condition that must be
satisfied between the circuit elements such that the potential
difference between points a and b is zero...
RF Communications CITIZEN BAND RADIO TEST Read each question carefully. Write the letter for the correct...
RF Communications CITIZEN BAND RADIO TEST Read each question carefully. Write the letter for the correct answer in the blank space provided. 1. The Citizen Band frequency range is a. 27.965-28.405 MHz b. 26.965-27.405 kHz c. 27.965 -28.405 kHz d. 26.965 27.405 MHz 2, when intelligence is injected into the final RF power amplifier, it is considered a. low-level modulation b. high-level modulation c. RF power modulation d. mid-level modulation la PAFre is used to calculate the_. M2Pc 2 a....
q1
q2
q3
pls, help me asap with this mcq, wrong solution give bad rate, tks
in ads!
1. A car uses digital logic to activate a seatbelt alarm. If the ignition is on for 20 seconds and seatbelt is unbuckled, which of the following is the correct truth table? Ignition Seatbelt Unbuckled X Timer Timer = 30s on Answer Ignition Timer X Seatbelt unbuckled 1 1 1 1 B С D 0 0 1 1 0 0 1 1...
1
2
4. The amplitude modulation signal is given by the following expression and is applied to 75 load. Vam(t) = 10 sin (21fct) - 2.5 cos (1500krt) + 2.5 cos (1450krt) V Determine: a) Modulation index b) The frequency of the carrier and the information signal c) The bandwidth d) The total power e) The transmission power efficiency be ar e 5. One of the inputs to a frequency modulator is a 250 kHz carrier signal with amplitude of...
10. Answer the following questions: 10.1 What characteristic of the carrier wave is changed to represent the data in ASK? a. amplitude b. frequency c. phase d. period 10.2 What kind of keying or modulation changes both the amplitude and phase of a carrier wave to represent data? a. FM 6. FSK c. PSK d. QAM 10.3 PSK is keying, not analog modulation. a. true b. false 11. Match. Data is the original information and signal is the information as...
Please help especially with the excel part. Thank you
2. A series RLC circuit has 3mH of inductance, 75.612 of resistance, and 84.4nF of capacitance. A 12v ac source is used. a. Determine the resonant frequency, bandwidth, and high & low cutoff frequencies of the circuit, all in kHz. b. Use the Excel spreadsheet posted to create a table and calculate the following over a range of 2kHz to 20kHz, at every 1kHz: • Capacitive Reactance • Inductive Reactance •...
NOTE: IT IS VERY IMPORTANT TO STATE THE UNIT OF EVERY QUANTITY UNLESS IT IS UNITLESS Problem 2 (30 pts) A transmission line has the following circuit values per unit length: a 0.5 S2/m resistance, a 10 S/m conductance, a 200 pF/m capacitance, and a 0.15 uH/m inductance. Knowing that the operating frequency is 450 Mrad/s calculate the following eight quantities: Y, Z, Y, C, B, 2, Vp, and Z. Problem 3 (25 pts) Analyzing wave reflection at discontinuities in...
can someone help me do this and maybe also the picture of the
scope explain how you get it. thankyou!
Frequency-shift keying (FSK) and Phase-shift keying (PSK) Two other modulation schemes are the phase-shift keying (PSK) and the frequency-shift keying (FSK). These are illustrated in Figure 8 b and c respectively. In phase-shift keying the carrier signal changes phase by a radians when the digital signal changes values. In frequency-shift keying a 0 is transmitted at a different carrier frequency...
3. Consider the AC circuit shown in the figure below, consisting
of an alternating voltage source—of voltage V (t) = V0 cos (ωt)—a
capacitor (of capacitance C), an inductor (of inductance L), and
two resistors (of resistances R1 and R2). Also, note the
highlighted points a and b in the circuit. (a) While explaining
your reasoning, determine the necessary condition that must be
satisfied between the circuit elements such that the potential
difference between points a and b is zero...
RF Communications CITIZEN BAND RADIO TEST Read each question carefully. Write the letter for the correct answer in the blank space provided. 1. The Citizen Band frequency range is a. 27.965-28.405 MHz b. 26.965-27.405 kHz c. 27.965 -28.405 kHz d. 26.965 27.405 MHz 2, when intelligence is injected into the final RF power amplifier, it is considered a. low-level modulation b. high-level modulation c. RF power modulation d. mid-level modulation la PAFre is used to calculate the_. M2Pc 2 a....
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